That did it!
I don’t know if this is related or not but: If I go to shop page https://www.laatusuklaa.fi/kauppa/ and add product to wislist (Lisää toivelistalle) it works fine and the font there is fine now. But after the product ois in wishlist and I go to the same product and it shows the “view wislist” option, the font is totally different and hard to read.
It should be font-family: Assistant; text-transform: uppercase; font-size: 12px; color: white; but I don’t know where to add this…